Evaluating the transition dipole moment of quantum dots with absorption and angle resolved photo-luminescence spectroscopy

2022/12/27 by Kalluru, Harshavardhan R., Tongbram, Binita, Basu, Jaydeep K.
#FOS: Physical sciences #Optics (physics.optics)

paper · doi:10.48550/arxiv.2212.13510

Abstract

In this manuscript, the evaluation procedure of transition dipole moment (TDM) is discussed. Semiconducting Cd_xZn_1-xSe_yS_1-y alloyed quantum dots (AQDs) are used as the two level emitting system. The AQDs are then self-assembled into monolayers by the Langmuir-Schaefer method. The TDM magnitude and orientation of AQDs are extracted from the absorption spectrum and the angle resolved Photo-luminescence emission spectrum measurements respectively. The TDM of AQDs in vacuum is evaluated as 9.07 D and the anisotropy coefficient shows that the AQD emission is isotropic.

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